分布式光纤传感技术在结构裂缝检测中的应用

Application of distributed Optical Fiber in Crack Detecting for Structure

裂缝检测对于预防土木工程重大事故具有重要意义,但具体实施却具有较高的技术难度。新近开始研究的一种监测手段——在土木工程中埋入分布式光纤传感器进行裂缝监测可以有效地解决这一难题。分布式光纤传感技术由于自身具有能实现大范围、连续的信息采集的诸多优点,从而可以实现土木工程的裂缝检测的功能。阐述并讨论了分布式光纤传感技术的原理、特点和相关的实验模型,并展望了在实际工程中应用的前景。

Crack detecting is very important to prevent major accident in civil engineering works , but it is still problematic in implementation . This problem can be solved effectively by a newly researched sensing means , i.e. crack detection by embedding distributed optical fiber into civil engineering works . With the ability of continuous information gathering in large extent , optical fiber can perform its function of crack detection well. The principle , property , experiment of optical fiber have been analyzed and discussed in the article . Application foreground of distributed fiber in crack detection in civil engineering works has been envisaged.